Assume that product Z is made of two units of A and four units of B. A is made of three units of C and four of D. D is made of two units of E.
Lead times for purchase or fabrication of each unit to final assembly are: Z takes two weeks; A, B, C, and D take one week each; and E takes three weeks.
Fifty units are required in period 10. (Assume that there is currently no inventory on-hand of any of these items.)
a. Show the bill-of-materials (product structure tree).
b. Develop an MRP planning schedule showing gross and net requirements and order release and order receipt dates.